A double bed sheet (Westbury on Trym BS9)

This is a sheet for a double bed. It’s unused and still in its original packaging. But it is old, from the 1990s, and the packaging is partially broken. Where it is broken the sheet has discoloured. See the photos. I doubt it will wash out. I think it is the light that has discoloured those patches. Measures 152cm by 200cm. Made from cotton and polyester.